This is the second letter sent to Google by CNIL, after the first one sent early February.
The questionnaire includes 69 precise questions and aims at clarifying the consequences of this new policy for Google's users, whether they have a Google Account, are non authenticated users, or are passive users of Google's services on other websites (advertising, analytics, etc.).
CNIL highlights a significant omission from Google's new policy: face recognition. The feature is used in the Picasa desktop application linked to Google's online photo album service.
The commission also wants to know why users' personal information may not be removed from Google's backup systems even after a user has asked Google to remove it.
CNIL said that Google's answers would serve to assess if the combination of data across services complied with the European data protection framework.
The CNIL asked Google to provide written responses by April 5.